Não informado. (1867). The American Naturalist. American Society of Naturalists.
Lua i Stíl Chicago (17ú heag.)Não informado. The American Naturalist. Chicago, Ill: American Society of Naturalists, 1867.
Lua MLA (8ú heag.)Não informado. The American Naturalist. American Society of Naturalists, 1867.
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